<?php
/**
 * Slipstream :: Highly adaptive dependency injection framework
 * Copyright 2010-2011 Ian Unruh (Xerof3ar)
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
namespace Slipstream\Infrastructure\Context\Type;
use Slipstream\Configuration\AliasPolicy;

/**
 * Checks the context for any alias policies and handles them accordingly
 * 
 * @author Ian Unruh (Xerof3ar) <ianunruh@gmail.com>
 * @since Class avaliable since release 1.0
 */
class AliasPolicyResolver implements ResolverInterface
{
	/**
	 * Resolves a context's type using a resolution context
	 * 
	 * @param ResolutionContext $resolution
	 * @return void
	 */
	public function resolve(ResolutionContext $resolution)
	{
		$policies = $resolution->getContext()->getPolicies();
		foreach($policies as $policy) {
			if($policy instanceof AliasPolicy) {
				$resolution->setContext($policy->get(AliasPolicy::OPTION_CONTEXT));
				$resolution->setResult(ResolutionResult::Alias());
			}
		}
	}
}